O-LevelPhysicsElectricity5054/11 · Oct/Nov 2016 · Q361 Mark

The diagram shows a cathode-ray tube. The dotted line shows the path of a beam of electrons. The beam hits the screen at point X and produces a bright spot. P and Q are horizontal plates on each side of the beam. Which change will move the bright spot to a different position on the screen?

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AApply a voltage between metal plates P and Q.

BDecrease the positive voltage of the anode.

CIncrease the positive voltage of the anode.

DIncrease the voltage between the terminals of the cathode.

✓ Correct answer

A: Apply a voltage between metal plates P and Q.

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Topic: Electricity, O-Level Physics (syllabus 5054). Multiple choice, 1 mark.
Source: O-Level Physics, Oct/Nov 2016 Paper 1 Variant 1, question 36.

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